Adjustable bobbin support



Dec. 10, 1929. w. T. BARRATT v 1,738,813

ADJUSTABLE BOBBIN SUPPORT y i 'Filed Sept. 24, 1928 linzen/071' V Zyl/Lal fg@ z y A Patented Dec. 10, 1929 Urano sTATEs PATENT OFFICE WLLIAM T. BARR-ATT, 0F BENNNGTGN, VERMONT, ASSIGNOR TO CHARLES COOPER COMPANY, OF BENNINGTON, VERMONT, A PARTNERSHIP 0F ELIZABETH COOPER KELLEY AND CHARLES C. KELLY ADJUSTABLE BOBBN SUPPGRT Application filed September 2e, 1928.

This invention relates to an adjustable bobbin support for knitting machines.

ln providing bobbin supports for knitting machines it has been lthe custom to permanently attach the same to the frame of the machine at such a location thereon that any of the regular stock sizes of bobbins may be employed without regard to the distance that may intervene between the tip of the bobbin and the nearest thread guide. lt has been determined, however, that there should be a delinite distance between the thread guide and the tip of the bobbin in order that the thread shall unwind easily and without slatting, and as there is Considerable variation in the height of the bobbins it is evident that after the bobbin support is positioned to allow a certain size of bobbin to unwind satisfactorily, that if the bobbin is changed and the distance between the thread guide and the tip of the bobbin is either increased or diminished that the thread will not unwind in the ecient manner that is desired.

The object of this invention is to provide a bobbin support that may be adjusted upon the knitting machine in such a manner that no matter what the height is of the bobbins that are employed the distance from the tip of the bobbin to 'the first thread guide, which always located directly thereabove, will be approximately the same.

The invention consists in an adjustable bobbin support for knitting machines as set forth in the following specification and particularly pointed out in the claims thereof.

Referring to the drawings:

Figure l represents a front elevation of the lower portion of a knitting machine, a bobbin support embodying my invention being mounted thereon.

F ig. 2 is a vertical section taken on the line 2 2 of Fig. l, looking in the direction of the arrows on said line.

Fig. 3 is a detail sectional view illustrating1 the means for clamping the bobbin frames to the guide members.

in the drawings, 5 represents the main frame of a knitting machine and 6 are vertical guide members which are rigidly sen cured in any suitable manner to the inner surserial No. 307,911.

face of the side members of said frame. Mounted upon each of the guide members 6 is a bobbin frame 7 having a groove 8 formed therein, in which the guide member 6 is located and by means of which the frame 7 is guided upon said guide member. Each frame 7 is secured to its guide member G after being positioned thereon by means of a clamp member 9. Rods l0 are mounted at their op posite ends in each of the bobbin frames 7, and adjustably mounted upon each of said rods are a plurality of trays ll constituting supports for bobbins A. The upper surfaces of each of the trays ll are recessed at l2 to receive the lower end of the bobbin, and a spindle i3 is provided upon each of the supports ll in order that the bobbins A may be positioned centrally upon the support.

Located directly above each row of bobbins is a thread guide la having suitable eyes l5 therein through which the thread a from the bobbin is threaded. The eyes 15 are located directly above the bobbin in longitudinal alignment to the median line thereof. The thread guides la are secured to the frame 5 of the knitting machine by means of brackets 16.

In utilizing the bobbin support of this invention the bobbin fra-mes 7 are positioned upon their respective guide members 6 so that the tips of the bobbins A will be located at a position at which the thread a will unwind in its most efficient manner, it being understood that as the thread unwinds the tendency is for it to slide 0E and pull from the tip of the bobbin as illustrated in the drawings.

It will furthermore be understood that the bobbins employed at any one time in connee tion with this device shall all be the same height and when it is desired to change from one height or type of bobbin to a bobbin of a different height and type, the bobbin frames 7 are adjusted upon the guides 6 so that the tips of the new bobbins will be positioned to allow the thread to unwind therefrom in its most efficient manner.

` I claim:

l. A support for bobbins having, in combination, a pair of guide members. a bobbin frame slidably mounted upon each of said 1GO guide members, means to clamp said frames to said members, rods mounted upon said frzmes and supports for bobbins upon said ro s.

v2. A support for bobbins having, in oombination, ay pair of guide members, a bobbin fra-me slidably mounted upon each of said guide members and provided With a groove' therein .by which said frame is guided upon said, member, means to. clamp said frame on said members, rods mounted upon said frame Y and supports for bobbins adj ustably mounted upon said rods.

3. The Combination with the frame of knitting machine of a pair' of guide members fast thereto, a bobbin frame slidably mounted upon each of said members, means to clamp said bobbin frames at diHerent elevations upon said guide members, rods mounted upon said bobbin frames and supports 'for bobbins adjvustably mounted upon saidrods.

In testimony whereof I have hereunto set my hand- WILLXAM T. BARRATT. 

